var lar = 0;
var alt = 0;
var hei = 0;
var lar2 = 0;
var alt2 = 0;
var hei2 = 0;
var lar3 = 0;
var alt3 = 0;
var hei3 = 0;
var lar4 = 0;
var alt4 = 0;
var hei4 = 0;
var lar5 = 0;
var alt5 = 0;
var hei5 = 0;
var lar6 = 0;
var alt6 = 0;
var hei6 = 0;
var agt=navigator.userAgent.toLowerCase();

if (navigator.appVersion.indexOf("Mac") != -1)
	{
	lar = (((window.screen.availWidth)-600)/2);
	alt = (((window.screen.availHeight)-400)/2);
	hei = 401;
	lar2 = (((window.screen.availWidth)-640)/2);
	alt2 = (((window.screen.availHeight)-480)/2);
	hei2 = 481;
	lar3 = (((window.screen.availWidth)-640)/2);
	alt3 = (((window.screen.availHeight)-500)/2);
	hei3 = 501;
	lar4 = (((window.screen.availWidth)-640)/2);
	alt4 = (((window.screen.availHeight)-600)/2);
	hei4 = 601;
	lar5 = (((window.screen.availWidth)-420)/2);
	alt5 = (((window.screen.availHeight)-340)/2);
	hei5 = 341;
	lar6 = (((window.screen.availWidth)-400)/2);
	alt6 = (((window.screen.availHeight)-100)/2);
	hei6 = 101;
	lar8 = (((window.screen.availWidth)-400)/2);
	alt8 = (((window.screen.availHeight)-350)/2);
	hei8 = 351;
	lar9 = (((window.screen.availWidth)-300)/2);
	alt9 = (((window.screen.availHeight)-170)/2);
	hei9 = 171;
}
else
	{
	lar = (((window.screen.availWidth)-600)/2);
	alt = (((window.screen.availHeight)-400)/2);
	hei = 400;
	lar2 = (((window.screen.availWidth)-640)/2);
	alt2 = (((window.screen.availHeight)-480)/2);
	hei2 = 480;
	lar3 = (((window.screen.availWidth)-640)/2);
	alt3 = (((window.screen.availHeight)-500)/2);
	hei3 = 500;
	lar4 = (((window.screen.availWidth)-640)/2);
	alt4 = (((window.screen.availHeight)-600)/2);
	hei4 = 600;
	lar5 = (((window.screen.availWidth)-420)/2);
	alt5 = (((window.screen.availHeight)-340)/2);
	hei5 = 340;
	lar6 = (((window.screen.availWidth)-400)/2);
	alt6 = (((window.screen.availHeight)-100)/2);
	hei6 = 100;
	lar8 = (((window.screen.availWidth)-400)/2);
	alt8 = (((window.screen.availHeight)-350)/2);
	hei8 = 350;
	lar9 = (((window.screen.availWidth)-300)/2);
	alt9 = (((window.screen.availHeight)-170)/2);
	hei9 = 170;
}

function pop(url)
	{
	window.open(url,'_blank','width=600, left='+lar+', top='+alt+', height='+hei)
}
function pop2(url)
	{
	window.open(url,'_blank','width=640, left='+lar2+', top='+alt2+', height='+hei2)
}
function pop3(url)
	{
	window.open(url,'_blank','width=621, left='+lar3+', top='+alt3+', height='+hei3)
}
function pop4(url)
	{
	window.open(url,'_blank','width=640, left='+lar4+', top='+alt4+', height='+hei4)
}
function pop5(url)
	{
	window.open(url,'_blank','width=420, left='+lar5+', top='+alt5+', height='+hei5)
}
function pop6(url)
	{
	window.open(url,'_blank','width=400, left='+lar6+', top='+alt6+', height='+hei6)
}
function pop7(url)
	{
	window.open(url,'_blank','width=600, scrollbars=yes, left='+lar+', top='+alt+', height='+hei)
}
function pop8(url)
	{
	window.open(url,'_blank','width=400, scrollbars=yes, left='+lar8+', top='+alt8+', height='+hei8)
}
function pop9(url)
	{
	window.open(url,'_blank','width=300, left='+lar9+', top='+alt9+', height='+hei9)
}

function apriCV() {
	window.open('http://posta.ricchetti.it/webapp/cv.nsf','cv','toolbar=no,fullscreen=no,scrollbars=yes,resizable=yes');
}

<!--
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function handleEnter (field, event) {
	var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : 
	event.charCode;
	if (keyCode == 13) {
	var i;
	for (i = 0; i < field.form.elements.length; i++)
	if (field == field.form.elements[i])
	break;
	i = (i + 1) % field.form.elements.length;
	field.form.elements[i].focus();
	return false;
	}
	else if (keyCode == 3) {
	var i;
	for (i = 0; i < field.form.elements.length; i++)
	if (field == field.form.elements[i])
	break;
	i = (i + 1) % field.form.elements.length;
	field.form.elements[i].focus();
	return false;
	}
	else
	return true;
}